Journal-bearing.



A. G. MEADEN JOURNAL BEARING.

APPLICATION man 1AN.24.191.

1,298,242, Pawnted Mar. 25,1919.

A g1/wanton afm) 1,7 Mm @2,11 M7 @,/NM

TINTTED :sTaTEs PATENT oEiuoE.

i ALFRED GEORGE MEADEN, AI!" MONTREAL, CANADA.V

'JOURNAL-BEARING'.

To all whom t may concern.'

Be it known that I, ALFRED GEORGE MEADEN, a subject of the King of GreatBritain and Ireland, residing in the city of Montreal, Dominion ofCanada, have invented a new and useful Improvement in Journal-Bearings,of which the following is a full, clear, and exact description andspecification thereof.

My invention relates to journal bearings for railway trucks and the likeand more particularly to those consisting of a journal box, a brass anda wedge of the standard form as adopted by the Master Car Buildl5 ersAssociation.

Its object is to provide a journal bearing in which the brass is of animproved design in respect to lightness, cheapness, durability andstrength.

The invention consists of a brass of the standard form and dimensionsbut having on its upper surface on both sides of the central line aseries of ellipsoidal concavities arranged with their major axesslanting toward the flanged end of the brass as hereafter shown anddescribed.

As the metal of which these brasses are constructed is both heavy andexpensive, it is desirable to provide a brass of the least possibleamount of metal commensurate with the necessary strength, wearingqualities and resistance to strain in any direction. Hitherto attemptshave been made to lighten the brasses by cutting away portions of theupper surface but the effect has been to produce weakness in portions ofthe brasses if the weight was decreased to any considerable extent,while if sufficient strength was maintained, the decrease in weight wasvery slight.

4By means of my peculiar construction I reduce the weight to a minimumwithout in any way decreasing the strength and resistance to strain andwithout producing any weakened parts.

Furthermore by reason of greatly decreasing the upper surface which isin contact with the wedge the brass is more easily1 and more cheaplymachined and more readily adjusted.

Reference is made to the accompanying drawings in which.

Figure 1 is a top plan View.

Specification of Letters Patent.

Fig. 2 is in part an end view and in part a cross section on the lineB-B of Fig. l.

Fig. 3 is a longitudinal section on the line A-A of Fig. l.

As the journal box and wedge are of standard type they will not be shownor described in detail.

The brass is of the standard type with upper surface l, beveled edges 2,2, and sides 3, 8. The lower surface 4 holds the antifriction metallining 5 over the axle. The usual flange 6 extends across the end of thebrass. On either side of the central line A-A of the surface 1, are aseries of ellipsoidal concavities arranged in pairs having their majoraxes slanting inward toward the flanged end of the brass. Theseconcavities are formed by suitable cores in the casting of the bearings.They extend from close to the central line A-A of the surface 1, to ashort distance from the sides 3, 3 cutting away a large portion of thebeveled edges 2, 2 but leaving suiiicient bearing surfaces on thesurface l and the edges 2, 2, to take the thrust of the load anddistribute it evenly on the antifriction lining 5. These bearingsurfaces consist of extended areas on the surface l and edges 2, 2, allconnected together by narrow ridges between the adjacent concavities.

The oblique arrangement of the concavities prevents the existence of anyweakened cross-section, while the ellipsoidal form of the concavitiesprovides the greatest strength for the least amount of metal. The sides3, 3 are in no way effected or weakened as the concavities do not extendas far as them.

I am aware that brasses with rectangular concavities having between themlongitudinal and transverse ribs with vertical sides have been in use,but these produce both areas of strength and of weakness and do notdistribute the load evenly to the antifriction metal.

What I claim, and desire to secure by Letters Patent, is

1. A journal bearing comprising a bearing member the upper surface andbeveled portions of which are cut away by ellipsoidal concavities.

2. A journal bearing comprising a bearing member, the upper surface andbeveled i Patented Mar. 25, 1919. appiicationiied January 24,1918.vseria1N.213,443. i i

portions of which are'cut away by ellips'oi` axes slanting inwardlytowardthe anged dal eonoavities on either side of the central end of themember. Y 10 line. In testimony whereof I afx my signature.

3. A journal bearing comprising al beare 5 ing member7 the uppersurfaceand beveled ALFRED GEORGE MEADEN portions of'which are eut awayby ellipsoi- Witnesses: dal eonoavities on either side of the central YHANBURY A. BUDDEN, line and said oonoavities having their major EMILYHAIL.

Y Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

